-34.63% is the change from 771 to 504
Calculation steps:
[( 504 - 771 ) ÷ 771] x 100 = -34.63%
Formula
Percentage change = [(504 - 771) / 771] x 100
Subtract the new number by the original number
504 - 771 = -267
-267 ÷ 771 = -0.3463035019455253
-0.3463035019455253 x 100 = -34.63%